Skid



G. F. GRIMM SKID Nov. 5, l 929.

Filed OOt. 21, 1927 ff Georgef'lvimm attenua Patented Nov. 5, 1929 UNITED STATES GEORGE F. GRIMM, F IEORIA, ILLINOIS SKID Applicationefiled Octoberk21, 1927. Serial No. 227,806.

This invention relates to improvements in skids, being directed to a carriage slidable upon a skid arranged to support the article to be-handledbut under perfect control of the *.5 drayman orother operator.

An object of the invention is to provide for `a skid of any ordinary construction a peculiarly constructed carriage for taking the load `to be handled, such construction being adapted to grip the skid automatically, preventing` the load getting out oi control.

Another object is to provide a load handling carriage for a skid which will automatically grip the skid by frictiony more or less tightly as the load is lighter or heavier.

Still another object is to provide aload receiving carriage for attachment toa skid which will automatically grip the skid to prevent descent o'f said load and to include with such carriage a manually controlled part by which the carriage and its load may be eased f to the place for unloading. y

In addition to the stated objects, a purpose of the invention is to provide mechanism for '25 a skid that will yprovide* perfect safety for the operator while'handling a heavy load in that there will be no danger of such load getting out of control.

The appended drawing shows a preferred iorm of my invention though it is to be understood that changes may be made therein while retaining the principle involved there- Figure 1 is a side elevation of a skid showing my invention yapplied thereto.

Figure 2 is a similar' view'of the invention shown on a larger scale with parts in a slightly altered position yfrom that ot Figure 1.

Figure 3 is a side elevation of the invention illustrating a modified type of load supporting member from that yshown in the iirst two figures. f

Figure 4 is a transverse section of part of the ormoic device shown in Figure 3 taken on y :line 4-4 of that figure.

Figure 5 is a side elevation of the invention as shown in Figure 2 lwith the parts thereof f on line 6 6 of that figure, and

Figure 7 is a transverse section of the inventi on and skid parts on line 7 -7 Figure 5,

In the several iigures 1 designates the usual parallelmembers or rails of a skid such as is employed for use with and i'or unloading trucks, 'freight cars and the like, and provided with metal strips or slides 2 upon their upper and lower sides, one of such strips or slides being formed into a .hook 3 in the ordinary way by which to secure the skid against slipping. f n

My invention includes a carriage consisting or' an upper shoe f1 to rest upon each of the upper slides 2 of the skid, Figure 7, eachpreferably having an upturned extension 5 at each end. Seated upon the shoe between said extensions is a strip oit yielding material 6 such as rubber, overlying which is a plate 7 extending across the space between ther skid members 1 as shownin Figure 7.

Beneath kthe lower slide of eachmember 1 is a shoe 8 to which is pivoted near one end the end of a link 9 whose other end is pivoted to the shoe 4l by bolts 10 extending through both `the said link ends into said shoes.v yA frame 11 encloses the other ends of the shoes as well as the plate 7 and extends entirely around the skid as clearly shown in Figure 7 while bolts 12 extend through the frame into both shoes 4 and 84 The upturned eX- tensions 5 of the upper shoe 4 prevent endwise movement of the plate 7 so that said plate is maintained inr proper relation to the other parts.

Afiixed to one of the links 9 is one end of a lever' 18 whoser other' end is tree to rise and tall with respect to the structure described, there being a spring 111 connected to the lever `at 15, for example, and to one ofthe bolts 12.

Mounted on the plate 7 may be any suitable form oil support 16 for the load to be controlled.

The frame 11 is preferably provided for the purpose of preserving connected relation of the parts of the carriage described since it extends entirely around the skid, the entire carriage parts being held as a complete unit.

The relation of the links 9 and said traine 11 to the shoes 4 and 8 is such that the said shoes may shift with respect to one another in opposite directions upon the slides 2 and acting with said links and frame after the manner of the parts orp the old and weil known parallel-rule. Since this action is employed use the spring 14 whose pull upon the lever 13 serves to slightly' shiift the shoes endwise in opposite directions thereby approaching in the direction of one another and grin slides 2 between them. The weight load upon the plate 7 supported in pl ce by the supports 16 is transterred to the upper shoe 4f and increases the friction oi both shoes upon the slides by tending to torce the said upper shoe downwardly racking the structure and causing both shoes to grip the slides more firmly. And as the weight oi' the load is greater so will the gripping action of the shoes be firmer. rll'he load may be eased down the `skid in a very smooth manner while being V] hen the lever is released the pull oi:

spring lei will be suilicient to restore gripping action in any position assisted by the weight of the load.

The strips 6 of rubber or like material in'erposed between the plate and the oe Ll cushions the load and permits slight relative movement ot the said plate and shoe.

TvVhile l have shown the simple term ot the support 16 for the load l may use the form shown in Figures 3 and 1l as a preferred one. ln said figures the reference characters heretofore used forcertain parts designatethe same parts therein except that in this instance the top plate which carries the load is represented by 7, there being at the forward edge thereoi a pair of upstanding ears 17, but one pair being shown, Figure 3, between which is pivoted at one of its corners a triangular load supporting member 18. ils with the form described previously, the upturned extensions 5 of the shoe el prevent endwise shitting oi the top plate 7. `Extending through a part 19 of said top plate from which the said pair of ears l? project and also through part 19 of said top-plate is a rod 2O having an upturned hook 21 to receive one extremity ot said member 18. spring 22 surrounds the end of the rod 20 opposite that having the hook, the same being compressed between the part 19 and a pin 28 in said rod normally holdmegeve ing the hook in engagement with said meinber 18. Each of the slides 2 may have an upturned stop-portion 2e, but one of them being shown, see Figure 3. The purpose of this structure is that the load especially if it be a barrel or other object that will roll may be automatically released when it reaches the lower end ot the skid. rllhat is to say, when and as the carriage nearly reaches the end of its travel down the skid the rod 2O will meet the portion 2l and as the said carriage completes its travel the extremity of the support 18 beneath the hook 21 will be released in its movement relative to the latter whereupon the support will turn upon its pivot on the ears 1T and take up the broken line position releasing the load. Upon returning the support to its position for engagement with the said hook 21 and moving the carriage up the skid the rod 2O will regain its normal position due to the spring 22, the carriage being ready for handling a further load.

l claim:

1. A portable skid for handling loads including a body to support the load, and a carriage slidable on said body having two linked parts movable relatively to engage opposite surfaces of said body and normally gripping the saine.

2. A portable skid for handling loads including a body to support the load, a carriage slidable on the body to engage the load having two linked parts adapted to shift relatively to engage opposite surfaces of said body, gripping the same between them, and means constantly tending to grip said parts upon saidvbody.

3. ifa portable skid for handling loads including a body to support the load, a carriage slidable on the body to engage the load having two linked parts adapted to shift relatively to engage opposite surfaces of said body, gripping the same between them, means constantly tending to grip said parts upon said body, and manually operated means to release the gripping action of the parts in opposition to the lirst said means.

4. A skid including the body thereof, and a carriage slidable on said body comprising a pair of members adapted to engage upon two opposite sides ot said body, a part pivotally connected at its ends to individual members oli the pair, and means to shift the members with respect to one another.

5. A skid incaicling the body thereof, a carriage slidable on said body including a pair of members adapted to engage twolopposite sides of said body, a part pivotally connected at each of its ends to one of the members, means to shiit the members with respectto one another and with respect to the skid-body, and a lever aiiixed to said part.

6. ln combination with the body of a skid, a carriage including a shoe at each of two opposite sides of the body adapted for engaging the same frictionally, a part pivotally connecting the slices whereby the latter may shift relatively and whereby also they may approach one another, and normally acting means to impart movement to said part for drawing the shoes toward one another upon the skid-body.

7. In combination with the body of a skid, a carriage including a shoe at each of two opposite sides of the body adapted for engaging the same frictionally, a part pivotally connecting the shoes whereby the latter may shift relatively and whereby also they may approach one another, means to impart movement to said part for drawing the shoes toward one another upon the skid-body, and a lever fixed to the part. 1

8. In combination with the body of a skid, a carriage mounted on the same for slidable movement including connected members for slidable thereon, a pivotally mounted support on said carriage for receiving a loady free movement with respect to one another, V

two of them adapted to engage opposite sides of said body and arranged whereby they may approach one another to grip said body.

9. In combination with the body of a skid, a carriage mounted on the samey including` a shoe at each of two opposite sides thereof, separate parts extending between the shoes and each pivotally connected to one of them at one of its ends, each part and said shoes adapted to have movement relatively whereby the latter may shift in opposite directions longitudinally of the body and in the direction of one another.

10. In combination with the body of a skid, a carriage including an upper and a lower shoe paralleling one another and lying at opposite sides of the skid body, a support for a load to be handled movable with said upper shoe, separate parts each pivotally connected to the shoes at one of their ends, said parts lying substantially parallel to one another and free to swing with respect to said shoes, and elastically controlled means operatively connected to the shoes adapted to shift the same relatively longitudinally of the skid body and toward one another.

1l. In combination with the body of a skid having two parallel rails, a carriage mounted on the rails including a pair of shoes at each rail, each pair adapted to slidably engage a rail, a connecting part pivotally attached to each pair of the shoes at one end thereof, a second connecting part pivotally connected to all of the shoes at their other ends, all of the described members adapted for movement relatively whereby the shoes of a pair may shift relatively longitudinally of the body, a lever ahixed kto one of the parts, and elastic means connected at its ends to a liXed part and to the lever, adapted to hold the latter in a position to clamp the shoes upon the rails.

12. In combination with a skid, a carriage 

